/* ======================================================
   Font and Base Layout
   ====================================================== */
body {
  font-family: 'Noto Serif JP', sans-serif;
  color: #1a1a1a;
  background-color: #ffffff;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: 'Noto Serif JP', sans-serif;
  font-weight: 700;
  color: #111;
  border-bottom: 1px solid #e0e0e0;
  padding-bottom: 0.2em;
}

a {
  color: #0172b3;
  text-decoration: none;
}

a:hover,
a:focus {
  color: #004e91;
  text-decoration: underline;
}

a:visited {
  color: #ca3f3f;
}

a:active {
  color: #044f91;
}

code,
pre {
  font-family: 'Courier', monospace;
  background-color: #f7f7f7;
  color: #000;
}

/* ======================================================
   Sidebar & Navbar Styling
   ====================================================== */
:root {
  --bg-0: #f7f5ee;
  --bg-1: #e3e0cd;
  --bg-2: #c7c2a6;
  --bg-3: #a8a486;
  --bg-4: #898265;
  --bg-5: #625f4a;
}

.wy-nav-side {
  background: var(--bg-0) !important;
  color: #4a4a4a;
  font-family: 'Noto Serif JP', sans-serif;
}

/* Force logo size for both sidebar  */
/* Sidebar logo: make the <img> actually take space */
.wy-side-nav-search img.logo,
.wy-side-nav-search a>img.logo,
.wy-side-nav-search__logo img,
.wy-side-nav-search__logo svg {
  height: 90px !important;
  width: auto !important;
  display: block !important;
  max-width: 100% !important;
}

.wy-side-nav-search {
  background-color: var(--bg-1) !important;
  border-bottom: 1px solid var(--bg-2) !important;
  padding: 1.2em 1em;
  font-size: 20px;
  font-weight: bold;
  color: #333 !important;
}

.wy-side-nav-search>a,
.wy-side-nav-search>a:visited {
  color: #333 !important;
}

.wy-side-nav-search>a>img.logo {
  margin-right: 8px;
}

.wy-menu-vertical header,
.wy-menu-vertical .caption-text {
  background: transparent !important;
  padding: 1em 1em;
  font-weight: bold;
  font-size: 14px;
  color: #333;
}

.wy-menu-vertical li a {
  background-color: transparent !important;
  color: #4a4a4a !important;
  padding: 1.2em 1em;
  transition: background 0.2s ease;
}

.wy-menu-vertical li a:hover {
  background-color: var(--bg-1) !important;
  color: #000 !important;
}

.wy-menu-vertical li.current>a,
.wy-menu-vertical li.on a {
  background-color: var(--bg-2) !important;
  font-weight: bold;
  color: #000 !important;
}

.wy-menu-vertical li.current>ul li a {
  background-color: var(--bg-0) !important;
  color: #4a4a4a !important;
}

.wy-menu-vertical li.current>ul li a:hover {
  background-color: var(--bg-1) !important;
  color: #000 !important;
}

/* Add left padding to sidebar items */
.wy-menu-vertical li.toctree-l1 > a {
  padding-left: 2em !important;  /* top-level */
}

.wy-menu-vertical li.toctree-l2 > a {
  padding-left: 3em !important;  /* nested one level */
}

.wy-menu-vertical li.toctree-l3 > a {
  padding-left: 4em !important;    /* nested two levels */
}

/* Optional: make the "+" toggle icon align better */
.wy-menu-vertical li.toctree-l1 > a .toctree-expand,
.wy-menu-vertical li.toctree-l2 > a .toctree-expand,
.wy-menu-vertical li.toctree-l3 > a .toctree-expand {
  margin-left: 0.5em;  /* keep the icon near the edge */
  margin-right: 0.5em;
}


/* Sticky top bar on small screens */
/* ---------- Mobile header: centered logo, small clickable area, sticky ---------- */
@media (max-width: 768px) {
  .wy-nav-top {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 3000;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 45px;
    background-color: #e3e0cd;
    /* keep your bar color here (mobile only) */
    border-bottom: 1px solid var(--bg-2);
    /* thin bottom line in your palette */
  }

  /* Only the logo is clickable (bounded width, no distortion) */
  .wy-nav-top a {
    display: inline-block;
    inline-size: min(160px, 60vw);
    /* narrow, responsive click area */
    block-size: 45px;
    /* match bar height */
    background: url("../_static/images/logos/logo.svg") no-repeat center / contain !important;
    /* <-- path check */
    text-indent: -9999px;
    overflow: hidden;
    margin: 0;
    padding: 0;
    /* neutralize theme padding */
  }

  /* Keep hamburger reachable on the left */
  .wy-nav-top .fa-bars,
  .wy-nav-top .wy-nav-top-toggle {
    position: absolute;
    left: 12px;
    color: #333 !important;
    /* dark gray/black */
  }

  /* Ancestor resets for sticky on iOS */
  .wy-body-for-nav,
  .wy-grid-for-nav,
  .wy-nav-content-wrap {
    overflow: visible !important;
    transform: none !important;
    -webkit-transform: none !important;
  }

  /* Keep content below the bar */
  .wy-nav-content {
    padding-top: 58px;
  }
}

/* ---------- iOS-only fixed fallback (if Safari still flakes) ---------- */
@supports (-webkit-touch-callout: none) {
  @media (max-width: 768px) {
    .wy-nav-top {
      position: fixed !important;
      top: env(safe-area-inset-top, 0);
      left: 0;
      right: 0;
      z-index: 4000;
    }

    .wy-nav-content-wrap {
      padding-top: calc(45px + env(safe-area-inset-top, 0)) !important;
    }

    .wy-nav-content {
      padding-top: 0 !important;
    }

    .wy-nav-side {
      top: calc(45px + env(safe-area-inset-top, 0)) !important;
    }
  }
}


/* ======================================================
   Function Boxes and Admonitions
   ====================================================== */
.viewcode-link,
.viewcode-link:hover {
  color: #625f4a !important;
  font-weight: normal;
  font-family: 'Noto Serif JP', sans-serif;
  text-decoration: none;
}

/* Signature block styles */
.sig {
  font-family: 'Noto Serif JP', sans-serif !important;
  background-color: var(--bg-0) !important;
  border-top: 3px solid var(--bg-2) !important;
  border-left: none !important;
  box-shadow: none !important;
  margin-left: 0 !important;
  padding-left: 0.5em !important;

  overflow-x: auto;
  overflow-y: hidden;
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 100%;
  box-sizing: border-box;
}

.sig,
.sig-name,
.sig-return {
  color: #000 !important;
  font-family: 'Noto Serif JP', sans-serif !important;
}

.sig-param,
.sig-paren {
  color: #49566d !important;
  white-space: normal;
  word-break: break-word;
}

.toctree-wrapper li code,
.toctree-wrapper li .pre,
.toctree-wrapper li .xref.py,
.toctree-wrapper li .xref.py.py-obj {
  all: unset;
  font-family: 'Noto Serif JP', sans-serif;
  color: #0172b3;
  cursor: pointer;
  text-decoration: none;
}

.toctree-wrapper li .xref.py:hover,
.toctree-wrapper li .xref.py.py-obj:hover {
  color: #004e91;
}

div.admonition.warning {
  background-color: #f9cfce !important;
  border-left: 6px solid #de6866 !important;
}

div.admonition.warning>.admonition-title {
  background-color: #eda4a7 !important;
  color: #000;
}

div.admonition.note {
  background-color: #c9e7fc !important;
  border-left: 6px solid #5799d2 !important;
}

div.admonition.note>.admonition-title {
  background-color: #9dccec !important;
  color: #000;
}

/* ======================================================
   Mobile Overflow & Readability Fixes
   ====================================================== */

/* Prevent nav content from overflowing on small screens */
.wy-nav-content {
  overflow-x: hidden;
  padding-left: 1em;
  padding-right: 1em;
  max-width: 1200px;
  /* Or 1000–1920px depending on your design */
  width: 100%;
  /* Allows shrinking on small screens */
  margin: 0 auto;
  /* Centers the content */
  box-sizing: border-box;
  /* Includes padding in width calculation */
}


/* Field lists like Parameters and Returns */
.field-list,
.docutils .field,
dl.field-list {
  overflow-x: auto;
  word-wrap: break-word;
  white-space: normal;
  max-width: 100%;
}

/* Code blocks */
pre {
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 100%;
}

/* Signature line overflow control */
dl.class>dt,
dl.function>dt {
  overflow-x: auto;
  word-wrap: break-word;
  white-space: pre-wrap;
  max-width: 100%;
  box-sizing: border-box;
}